Noderig - Export OS stats as Sensision Metrics

Noderig collect OS metrics and expose them through a Sensision HTTP endpoint. Each collector is easily configurable, thanks to a simple level cursor

Noderig metrics:

• CPU
• Memory
• Load
• Disk
• Net
• External collectors

Status

Noderig is currently under development. Feel free to comment or contribute!

Building

Noderig is pretty easy to build.

• Clone the repository
• Install glide, follow instructions here https://glide.sh/
• Download dependencies glide install
• Build and run go run noderig.go

Usage

noderig [flags]

Flags:
      --config string     config file to use
  -l  --listen string     listen address (default "127.0.0.1:9100")
  -v  --verbose           verbose output
      --period uint       default collection period (default 1000)
      --cpu uint8         cpu metrics level (default 1)
      --disk uint8        disk metrics level (default 1)
      --mem uint8         memory metrics level (default 1)
      --net uint8         network metrics level (default 1)
      --load uint8        load metrics level (default 1)
  -c  --collectors string external collectors directory (default "./collectors")
  -k  --keep-for uint     keep collectors data for the given number of fetch (default 3)

Collectors

Noderig have some built-in collectors.

CPU

0		disabled metrics
1	os.cpu{}	combined percentage of cpu usage
2	os.cpu.iowait{}	combined percentage of cpu iowait
	os.cpu.user{}	combined percentage of cpu user
	os.cpu.systems{}	combined percentage of cpu systems
3	os.cpu.iowait{chore:n}	chore percentage of cpu iowait
	os.cpu.user{chore:n}	chore percentage of cpu user
	os.cpu.systems{chore:n}	chore percentage of cpu systems

Memory

0		disabled metrics
1	os.mem{}	percentage of memory used
	os.swap{}	percentage of swap used
2	os.mem.used{}	used memory (bytes)
	os.mem.total{}	total memory (bytes)
	os.swap.used{}	used swap (bytes)
	os.swap.total{}	total swap (bytes)

Load

0		disabled metrics
1	os.load1{}	load 1
2	os.load5{}	load 5
	os.load15{}	load 15

Disk

0		disabled metrics
1	os.disk.fs{disk:/sda1}	disk used percent
2	os.disk.fs.used{disk:/sda1}	disk used capacity (bytes)
	os.disk.fs.total{disk:/sda1}	disk total capacity (bytes)
3	os.disk.fs.bytes.read{disk:/sda1}	disk read rate (bytes/s)
	os.disk.fs.bytes.write{disk:/sda1}	disk write rate (bytes/s)
4	os.disk.fs.io.read{disk:/sda1}	disk io read rate (bytes/s)
	os.disk.fs.io.write{disk:/sda1}	disk io write rate (bytes/s)

Net

0		disabled metrics
1	os.net.bytes{direction:in}	in bytes rate (bytes/s)
	os.net.bytes{direction:out}	out bytes rate (bytes/s)
2	os.net.bytes{direction:in, iface:eth0}	iface in bytes rate (bytes/s)
	os.net.bytes{direction:out, iface:eth0}	iface out bytes rate (bytes/s)
3	os.net.packets{direction:in, iface:eth0}	iface in packet rate (packet/s)
	os.net.packets{direction:out, iface:eth0}	iface out packet rate (packet/s)
	os.net.errs{direction:in, iface:eth0}	iface in err rate (err/s)
	os.net.errs{direction:out, iface:eth0}	iface out err rate (err/s)
	os.net.dropped{direction:in, iface:eth0}	iface in drop rate (drop/s)
	os.net.dropped{direction:out, iface:eth0}	iface out drop rate (drop/s)

Configuration

Noderig can read a simple default config file.

Configuration is load and override in the following order:

• /etc/noderig/config.yaml
• ~/noderig/config.yaml
• ./config.yaml
• config filepath from command line

Definitions

Config is composed of three main parts and some config fields:

Collectors

Noderig have some built-in collectors. They could be configured by a log level. You can also defined custom collectors, in an scollector way. (see: http://bosun.org/scollector/external-collectors)

cpu: 1  # CPU collector level     (Optional, default: 1)
mem: 1  # Memory collector level  (Optional, default: 1)
load: 1 # Load collector level    (Optional, default: 1)
disk: 1 # Disk collector level    (Optional, default: 1)
net: 1  # Network collector level (Optional, default: 1)

Parameters

Noderig can be customized through some parameters.

period: 1000             # Duration within all the sources should be scraped    (Optional, default: 1000)
listen: none             # Listen address, set to none to disable http endpoint (Optional, default: 127.0.0.1:9100)
collectors: /opt/noderig # Custom collectors directory                          (Optional, default: none)

Collectors Options

Some collectors can accept optional parameters.

net-opts: 
  interfaces:            # Give a filtering list of interfaces for which you want metrics
    - eth0
    - eth1

Sample metrics

1484828198557102// os.cpu{} 2.5202020226869237
1484828198560976// os.mem{} 24.328345730457112
1484828198560976// os.swap{} 0
1484828198557435// os.load1{} 0.63
1484828198561366// os.net.bytes{direction:in} 858
1484828198561366// os.net.bytes{direction:out} 778
1484828197570759// os.disk.fs{disk:/dev/sda1} 4.967614357908193

Contributing

Instructions on how to contribute to Noderig are available on the Contributing page.

Get in touch

• Twitter: @notd33d33